Spirit Merchant (technically traded). Each of these marks the exact location of an outer biome boss spawn. Each scanner recipe uses a resource unique to the boss's biome. Either found on the ground or as a mob drop. Screenshot by Bonus Action Glow Tulips, and recipes that incorporate them, https://paxtonssrru.dreamyblogs.com/30194066/o-melhor-single-estratégia-a-utilizar-para-core-keeper-gameplay